Subhasis Thakur
Dialogue Games in Defeasible Logicc

Modeling interaction among artificial agents is a challenging task.
Argumentation, auction, dialogue games and agent communication
languages are proposed as mechanisms to model agent interaction. Among
different mechanisms to model interaction among agents, dialogue game
protocols is most significant. In this thesis I model a dialogue game
in defeasible logic. I have two research goals. First, previous
development of dialogue game protocols does not consider the strategic
behaviour of agents. In this thesis I model the strategic behaviour of
agents. Second, as more and more dialogue game protocols are developed
there is a need to compare these protocols so that an appropriate
protocol can be chosen for a given problem. Previous attempts to
compare dialogue game protocols are based on functional comparison of
components of a protocol. In this thesis I develop a new semantics for
locution. Based on this semantics, dialogue game protocols can be
compared so the protocol that can convey the right meaning can be
identfied.